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| Mirrors > Home > MPE Home > Th. List > vsnid | Structured version Visualization version GIF version | ||
| Description: A setvar variable is a member of its singleton. (Contributed by David A. Wheeler, 8-Dec-2018.) |
| Ref | Expression |
|---|---|
| vsnid | ⊢ 𝑥 ∈ {𝑥} |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | vex 3454 | . 2 ⊢ 𝑥 ∈ V | |
| 2 | 1 | snid 4623 | 1 ⊢ 𝑥 ∈ {𝑥} |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ∈ wcel 2145 {csn 4584 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-ext 2732 |
| This proof depends on definitions: df-bi 210 df-an 402 df-tru 1573 df-ex 1813 df-sb 2100 df-clab 2739 df-cleq 2752 df-clel 2835 df-v 3452 df-sn 4585 |
| This theorem is used by: exsnrex 4641 rext 5416 unipw 5418 xpdifid 6155 xpdifcnvepel 6156 opabiota 6956 fnressn 7151 fressnfv 7153 snnex 7756 frrlem12 8294 frrlem14 8296 mapsnd 8893 funen1cnv 9035 findcard2d 9161 ac6sfi 9254 iunfi 9310 elirrvOLDOLD 9571 kmlem2 10187 fin1a2lem10 10444 hsmexlem4 10464 iunfo 10580 modfsummodslem1 15912 lcmfunsnlem2lem1 16761 coprmprod 16784 coprmproddvdslem 16785 c0snmgmhm 20639 lbsextlem4 21386 frlmlbs 22050 coe1fzgsumdlem 22568 evl1gsumdlem 22621 maducoeval2 22902 dishaus 23647 dis2ndc 23726 dislly 23763 dissnlocfin 23795 comppfsc 23798 txdis 23898 txdis1cn 23901 txkgen 23918 isufil2 24174 alexsubALTlem4 24316 tmdgsum 24361 dscopn 24839 ovolfiniun 25769 volfiniun 25815 jensen 27265 uvtx01vtx 29897 cplgr1vlem 29929 unidifsnel 33050 gsumpart 33543 dflring3 33948 mplidomlem 34078 vieta 34131 extdg1id 34217 irngss 34238 esum2dlem 34643 bnj1498 35611 fineqvnttrclselem2 35709 wevgblacfn 35809 cvmlift2lem1 35982 funpartlem 36622 ttcid 37196 topdifinffinlem 38184 fvineqsneq 38249 pibt2 38254 finixpnum 38442 mbfresfi 38498 pclfinN 40871 sn-iotalem 43189 mzpcompact2lem 43694 dvmptfprod 46871 fourierdlem48 47080 sge0sup 47317 funressnvmo 48031 dfclnbgr6 48870 dfsclnbgr6 48872 termco 50505 termcarweu 50552 diag1f1o 50558 diag2f1o 50561 |
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